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Re: O_NONBLOCK serial I/O blocks on 95, OK on NT
- To: "'cygwin at cygwin dot com'" <cygwin at cygwin dot com>
- Subject: Re: O_NONBLOCK serial I/O blocks on 95, OK on NT
- From: Christopher Faylor <cgf at redhat dot com>
- Date: Wed, 6 Dec 2000 14:47:24 -0500
- References: <F10D23B02E54D011A0AB0020AF9CEFE999EE7C@lynx.ceddec.com>
- Reply-To: cygwin at cygwin dot com
On Wed, Dec 06, 2000 at 02:46:30PM -0500, Town, Brad wrote:
>Christopher Faylor [mailto:cgf@redhat.com] wrote:
>> Serial I/O in cygwin uses MS overlapped I/O. Maybe this
>> isn't completely
>> implemented on w9x.
>
>Microsoft's overlapped I/O for serial ports is fully implemented, though
>it's just different enough to drive you crazy. I've had times when serial
>I/O code (straight Win32 API stuff) would work perfectly under NT/2000, but
>would fail under Win9x because some parameters were considered invalid. I
>wish I could remember the details.
FWIW, I have tested serial I/O on w9x so it probably isn't something simple.
cgf
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